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Finding the Fourth Proportional to 504,666.64, 696,521.20 and 300,742.08

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Solution

The fourth proportional to 504,666.64, 696,521.20 and 300,742.08 is: 415,072.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,666.64 : 696,521.20 = 300,742.08 : x
  2. Step 2: Convert to fraction form
    504,666.64/696,521.20 = 300,742.08/x
  3. Step 3: Cross multiply
    504,666.64x = 696,521.20 × 300,742.08
  4. Step 4: Simplify right side
    504,666.64x = 209,473,234,452.10
  5. Step 5: Solve for x
    x = 209,473,234,452.10/504,666.64
  6. Step 6: Final answer
    x = 415,072.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.